Title :
The Aerosol Physical Characteristics of Desertification Grass Areas in North China during Spring
Author :
Yue Ping ; Niu Shengjie
Author_Institution :
Nanjing Univ. of Inf. Sci. &Technol., Nanjing
Abstract :
The physical characteristics of dust aerosol were collected over Zhurihe (ZH) site, which lies on the southwest border of Hunshan Dake sand-land (HDS), by using WPS (wide-range particle spectrometer) model 1000XP during the spring of 2006. Size distributions of particles with 0.5-10.0 mum were examined and the daily mean number concentration of aerosols for the situ periods on non-dusty days was 86.7 cm-3. It was 1333.08 cm-3 on windblown dust (WD), 2817.09 cm-3 on light dust storm (LDS) and 4372.58 cm-3 on severe dust storm (SDS). Comparing with Sanggen Dalai (SD), which lies in the inner of HDS, observed during IMGRASS (inner-Mongolia semi-arid grass-land atmosphere surface study) of 2001, the average number concentrations of dust aerosol was 3039.5 cm-3 on SDS , 659.7 cm-3 on LDS, 198.3 cm-3 on WD and 27.7 cm-3 on ND of the inner HDS. The results show that there are more dust aerosols over the board than the inners both on dusty days and non-dusty days, but the mean particles diameter over the inner is larger than the boards.
Keywords :
aerosols; dust; particle spectrometers; AD 2001; AD 2006; Hunshan Dake sand land; IMGRASS; North China; Sanggen Dalai; Zhurihe; aerosol physical characteristics; desertification grass areas; dust aerosol; dust storm; particle size distributions; size 0.5 mum to 10.0 mum; wide range particle spectrometer; Aerosols; Asia; Atmospheric modeling; Biological system modeling; Electronic mail; Government; Information science; Spectroscopy; Springs; Storms;
Conference_Titel :
Bioinformatics and Biomedical Engineering, 2008. ICBBE 2008. The 2nd International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1747-6
Electronic_ISBN :
978-1-4244-1748-3
DOI :
10.1109/ICBBE.2008.616